Tree Finder: A Manual for Identification of Trees by their Leaves (Eastern US) (Nature Study Guides)

Winter Tree Finder: A Manual for Identifying Deciduous Trees in Winter (Eastern US) (Nature Study Guides)

Flower Finder: A Guide to the Identification of Spring Wild Flowers and Flower Families East of the Rockies and North of the Smokies, Exclusive of Trees and Shrubs (Nature Study Guides)

A Field Guide to Eastern Trees: Eastern United States and Canada, Including the Midwest (Peterson Field Guides (Paperback))

Audubon Society Field Guide to North American Trees: Eastern Region

Winter Weed Finder: A Guide to Dry Plants in Winter (Nature Study Guides)

Berry Finder: A guide to native plants with fleshy fruits

Fern Finder: A Guide to Native Ferns of Central and Northeastern United States and Eastern Canada (Nature Study Guides)

Tree Identification Book : A New Method for the Practical Identification and Recognition of Trees

National Wildlife Federation Field Guide to Trees of North America